Seiko Automatic Cal. 4205 "Swiss Model", Antimagnetic, ca. 2001
The original strap was cool, but not water resistant
I kept the original dark green Seiko leather strap and changed to a water resistant Morellato. The climate here and my transpiration kill normal leather bands in a couple of weeks. So if I buy (rarely) a watch on a band, I will immediately put a water resistant strap on it and keep the original as brandnew, that way the "set" is still complete.